package esception;

public class TryCatchDemo4 {
    public static void main(String[] args) {
        System.out.println("程序开始了...");
        try {
            String line = null;
            System.out.println(line.length());
        }catch (NullPointerException e){
             System.out.println("出现空指针异常并解决了...");
        }
        System.out.println("程序结束了");
    }
}
